3689897 has 4 divisors (see below), whose sum is σ = 3694596. Its totient is φ = 3685200.

The previous prime is 3689887. The next prime is 3689911. The reversal of 3689897 is 7989863.

3689897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2399401 + 1290496 = 1549^2 + 1136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3689897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3689887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854 + ... + 2847.

It is an arithmetic number, because the mean of its divisors is an integer number (923649).

Almost surely, 2^3689897 is an apocalyptic number.

It is an amenable number.

3689897 is a deficient number, since it is larger than the sum of its proper divisors (4699).

3689897 is an equidigital number, since it uses as much as digits as its factorization.

3689897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698.

The product of its digits is 653184, while the sum is 50.

The square root of 3689897 is about 1920.9104612136. The cubic root of 3689897 is about 154.5271332690.

It can be divided in two parts, 3689 and 897, that multiplied together give a palindrome (3309033).

The spelling of 3689897 in words is "three million, six hundred eighty-nine thousand, eight hundred ninety-seven".